Tui UK and Ireland is one of 75 different entries to have been selected at this stage.
The company, which employs more than 1,000 people, is represented alongside a host of other organisations, including hotels and campaign groups.
Justin Francis, managing director of Responsible Travel and founder of the awards, said: “There are a few things which have really got me excited this year and one is seeing representatives from destinations such as Dubai, places we don’t usually associate with responsible tourism, included in the longlist for the first time.
“For me this is a clear indication the wider tourism industry is recognising the importance and benefits of operating in a responsible way.”
The awards will be held at World Travel Market London on World Responsible Tourism Day on November 8.
- For the full longlist, visit responsibletravel.com/awards